Adelaide, Australia — South Australian Premier Peter Malinauskas and the Labor Party claimed a resounding victory in the March 21, 2026, state election, securing what commentators describe as the largest government majority in the state's history. With vote counting advancing on March 23, Labor has won at least 32 seats in the 47-member House of Assembly, well above the 24 required for a majority, while the Liberal opposition has been reduced to four seats. Pauline Hanson's One Nation achieved a historic breakthrough, winning at least one lower house seat and surging to second place in the primary vote, outpolling the Liberals statewide.

Malinauskas in 2016
Malinauskas in 2016

The election, held after a campaign dominated by cost-of-living concerns, housing affordability, and regional discontent, saw record early voting with over 454,000 ballots cast before polling day. Polls closed at 6 p.m. local time on Saturday, and projections from the Australian Broadcasting Corporation confirmed Labor's dominance early in the count. As of Monday morning, March 23, with approximately 65% of votes counted, Labor held 32 seats, Liberals 4, One Nation 1, others and independents 2, and eight seats remained in doubt, according to ABC election analyst updates.

Malinauskas, who first led Labor to victory in 2022, delivered a victory speech emphasizing humility and inclusivity. "This result humbles us," he said, reaching out to One Nation supporters and calling for "kinder politics" amid polarization. He highlighted Labor's achievements in health, education, and economic management, positioning the government as a stabilizing force in uncertain times. The premier invoked Australian poet Henry Lawson in his address, underscoring unity and progress.

Labor's primary vote stood at 37.7%, a slight decline of 2.3% from 2022, yet the party benefited from a fragmented opposition. The two-party preferred vote favored Labor by around 59-41%, reflecting effective preference flows in many seats. The victory swept metropolitan Adelaide, with Labor retaining or gaining nearly all urban electorates, including marginal seats previously held by Liberals.

The Liberal Party suffered its most devastating defeat in modern times. Entering the election as opposition with 13 seats after 2022, the Liberals collapsed to just four projected wins, recording a primary vote of 19.0%—a 16.6% swing against them. Opposition Leader Ashton Hurn conceded defeat graciously, acknowledging "sobering lessons" and the need for introspection. Former Liberal figures like Christopher Pyne and Alexander Downer called for constitutional and factional reforms within the party to address the rout. The Liberals' urban Adelaide presence dwindled dramatically, with only limited regional holds.

One Nation's performance dominated post-election analysis. The party secured 22.1% of the primary vote—a massive 19.5% swing—and won at least one seat, with ABC projections confirming Robert Roylance's victory in Hammond, marking One Nation's first lower house seat in South Australia. The party finished in the top two in roughly half of the state's electorates, leading in several others like Stuart and Light. Analysts noted One Nation drew votes from both Liberal and Labor bases in outer suburbs and regional areas, fueled by concerns over immigration, economic pressures, and distrust of major parties. Pauline Hanson hailed the result as the party's best in nearly 30 years.

The surge reshaped the opposition landscape. With Liberals reduced to a handful of seats, One Nation could emerge as the de facto opposition in parliament, especially if further counts favor them. Electoral analyst Antony Green highlighted challenges in preference counting, as One Nation's strong primary showing altered traditional Labor-Liberal matchups in many seats, complicating projections.

The Greens held steady at 10.3% primary vote but won no seats, while independents and others claimed a small share. Voter turnout remained high, supported by expanded early voting options from March 14.

Malinauskas's strengthened majority grants significant legislative freedom for priorities like renewable energy, housing initiatives, and health reforms. The premier pledged cross-party cooperation while committing to progressive values.

The result carries national implications, signaling potential challenges for major parties in regional and outer-metropolitan seats ahead of federal elections. One Nation's breakthrough could influence debates on immigration and economic policy.

As counting continues, final seat allocations may shift slightly, but Labor's landslide appears locked in. Malinauskas will lead a bolstered team into a second term, navigating a transformed parliament where One Nation's rise challenges traditional dynamics.

The 2026 election underscores evolving voter sentiments in Australia, with Labor's stability prevailing amid opposition fragmentation and populist gains.